The last episode 4/11/07 showed the 'Others' with Kate, Jack, Sayid, and Juliet after the 'gassing' that they were on the Others' island...which the writers were VERY specific in spending a great deal of time on in terms of plot etc etc....so, when they(Kate Jack Sayid, and Juliet return to the beach, did they ever show them going from one island to the next, or was this supposed to be assumed...also, the 'monster/smokey' was shown now to be on both islands, as Kate and Juliet used the 'Others' defenses' to protect themselves from it...right? So, this whole thing about the importance of different islands was soooo important a few episodes ago, and is now not? Or was the importance given simply so assumptions like these can be made...?